The employees of the SBU's Alfa special police force who participated in the so-called "anti-terrorist operation" on Independence Square in Kyiv are currently hiding in Crimea, Head of the Security Service of Ukraine (SBU) Valentyn Nalyvaichenko has said.

"Berkut employees who have not yet been detained and Alfa employees who also participated in a war crime are now hiding in Crimea," he said at a briefing in Kyiv on Thursday.

Nalyvaichenko added that these individuals had been identified, their involvement in the crime had been established, and that investigators had to interrogate them.

However, he said, former Alfa officials are being interrogated and are cooperating with investigators.

"Those who carried out criminal orders from [former SBU Chief Oleksandr] Yakymenko are being interrogated," Nalyvaichenko said.